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<html>
<head>
<!--
  Copyright (c) 2015-2017 Jean-Marc VIGLINO,
  released under CeCILL-B (french BSD like) licence: http://www.cecill.info/
-->
  <title>ol-ext: Control overlay</title>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

  <meta name="description" content="styled popup for OL3" />
  <meta name="keywords" content="ol3, menu, control, overlay, jQuery" />

  <!-- jQuery -->
  <script type="text/javascript" src="https://code.jquery.com/jquery-1.11.0.min.js"></script>

  <!-- Openlayers -->
  <link rel="stylesheet" href="https://openlayers.org/en/latest/css/ol.css" />
  <script type="text/javascript" src="https://openlayers.org/en/latest/build/ol.js"></script>
  <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL,Object.assign"></script>
  
  <!-- ol-ext -->
  <link rel="stylesheet" href="../../dist/ol-ext.css" />
  <script type="text/javascript" src="../../dist/ol-ext.js"></script>

  <link rel="stylesheet" href="../style.css" />
  <style>
    .ol-overlay .ol-fullscreen-image.ol-has-title img {
      padding-bottom: 6em;
    }
  </style>

</head>
<body >
  <a href="https://github.com/Viglino/ol-ext" class="icss-github-corner"><i></i></a>

  <a href="../../index.html">
    <h1>ol-ext: Control overlay</h1>
  </a>

  <div class="info">
    Display an overlay with a content on the map. 
    <ul>
      <li>
        The <i>closeBox</i> option adds a close button to hide the overlay.
      </li>
      <li>
        The <i>closeOnClick</i> option enable close when click on the element.
      </li>
      <li>
        You can listen to the <i>change:visible</i> event to sknow when overlay is displayed/hidden.
      </li>
      <li>
        You can use CSS class to specify an animation or define your own one.
      </li>
    </ul>
    <i>ol.control.Overlay</i> requires jQuery.
  </div>

  <!-- DIV pour la carte -->
  <div id="map" style="width:600px; height:400px;"></div>

  <div class="options">
    <h2>Options:</h2>
    Animation:
    <select id="anim" onchange="popup.setClass(this.value);">
      <option value="">default (fade)</option>
      <option value="slide-up">slide-up</option>
      <option value="slide-down">slide-down</option>
      <option value="slide-left">slide-left</option>
      <option value="slide-right">slide-right</option>
      <option value="zoom">zoom (from center)</option>
      <option value="zoom frompoint">zoom (from point)</option>
      <option value="zoomout">zoom out</option>
      <option value="zoomrotate">zoom+rotate (from center)</option>
      <option value="zoomrotate frompoint">zoom+rotate (from point)</option>
      <option value="stretch">stretch</option>
      <option value="stretchy">stretch-y</option>
      <option value="wipe">wipe</option>
      <option value="flip">flip</option>
      <option value="card">card</option>
      <option value="book">book</option>
    </select>
  </div>
  <p>Click on the points to show an overlay!</p>
  
  <script type="text/javascript">
  // Layers
  var layers = [
    new ol.layer.Tile({
      title:'terrain-background',
      source: new ol.source.Stamen({ layer: 'terrain' })
    })
  ]

  // The map
  var map = new ol.Map ({
    target: 'map',
    view: new ol.View ({
      zoom: 5,
      center: [166326, 5992663]
    }),
    layers: layers
  });

  // Popup overlay
  var popup = new ol.control.Overlay ({ hideOnClick: true, className: $("#anim").val() });
  map.addControl(popup);

  // Set wipe parameters before/after vivibility change
  popup.on("change:visible", function(e) {
    // wipe needs to know the size of the element to clip on
    if (/wipe/.test($("#anim").val())) {
      if (e.visible) {
        $(e.element).css("clip","rect(0px,"+map.getSize()[0]+"px,"+map.getSize()[1]+"px,0px)");
      } else {
        $(e.element).css("clip","rect(0px,0px,"+map.getSize()[1]+"px,0px)");
      }
    }
    // Reset clip for others
    else $(e.element).css("clip","");
  });

  // GeoJSON layer
  var vectorSource = new ol.source.Vector({
    url: '../data/fond_guerre.geojson',
    projection: 'EPSG:3857',
    format: new ol.format.GeoJSON(),
    attributions: [ "&copy; <a href='https://data.culture.gouv.fr/explore/dataset/fonds-de-la-guerre-14-18-extrait-de-la-base-memoire'>data.culture.gouv.fr</a>" ],
    logo:"https://www.data.gouv.fr/s/avatars/37/e56718abd4465985ddde68b33be1ef.jpg" 
  });

  map.addLayer(new ol.layer.Vector({
    name: 'Fonds de guerre 14-18',
    source: vectorSource
  }));

  // Control Select 
  var select = new ol.interaction.Select({});
  map.addInteraction(select);

  // Remove selection on close
  popup.on("change:visible", function(e){ if (!e.visible) select.getFeatures().clear(); });

  // On selected => show/hide popup
  select.getFeatures().on('add', function(e) {	
    var feature = e.element;
    popup.showImage(feature.get("img").replace("_v.jpg","_p.jpg"), {
      coordinate: (/frompoint/.test($("#anim").val()) ? feature.getGeometry().getCoordinates() : null),
      title: feature.get("text") +'<br/>'
        +feature.get("commune")+" ("+feature.get("region")+" - "+feature.get("date").replace(".","/")+")<br/>"
        +"&copy; "+feature.get("copy")+" - "+feature.get("author")
    });
    /*
    var img = $("<img>").attr("src", feature.get("img").replace("_v.jpg","_p.jpg"));
    popup.show(img.get(0).outerHTML, /frompoint/.test($("#anim").val()) ? feature.getGeometry().getCoordinates():null);
    */
  });

  </script>

</body>
</html>